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[RFC] default type parameter for generics Β· Issue #85 Β· nim-lang/RFCs Β· GitHub
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These should be supported IMO:
with typedesc (EDIT this one now works)
proc foo6(T:typedesc = typedesc[int]): auto = return T.name
echo foo6(int) # (or int.foo6) ok
echo foo6() #ok
echo foo6(string) # Error: type mismatch: got <type int> but expected 'type string'
with generics
proc foo3[T=string](): auto = return T.name
echo foo3() # Error: cannot instantiate: 'T'
echo foo3[]() # Error: type mismatch: got <proc [*missing parameters*](): untyped>
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mentioned here: nim-lang/Nim#3502 (comment)
I like the idea of default generic parameters, maybe named ones like parse[Dest = int] could be cool too. Is there an RFC for this?
alapini, haxscramper, SolitudeSF, konsumlamm and hamidb80
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